:root {
    --primary-color: #5D9CEC; /* 柔和的蓝色 */
    --secondary-color: #6C7A89; /* 柔和的灰色 */
    --accent-color: #A0D468; /* 柔和的绿色 */
    --light-color: #F5F7FA;
    --dark-color: #434A54;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #F5F7FA;
    color: var(--dark-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
    background: linear-gradient(135deg, var(--primary-color), #7AB3EF);
    color: white;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 500;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

.options-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.option-card {
    display: block;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    padding: 30px;
    border-left: 4px solid var(--primary-color);
}

.option-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.option-card.results {
    border-left-color: var(--accent-color);
}

.option-card.request {
    border-left-color: #4FC1E9; /* 柔和的浅蓝色 */
}

.card-content h2 {
    color: var(--dark-color);
    margin-bottom: 15px;
    font-size: 1.5rem;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.card-content h2::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 20px;
    background-color: var(--primary-color);
    margin-right: 12px;
    border-radius: 3px;
}

.option-card.results h2::before {
    background-color: var(--accent-color);
}

.option-card.request h2::before {
    background-color: #4FC1E9;
}

.card-content p {
    color: #666;
    margin-bottom: 25px;
    min-height: 60px;
    line-height: 1.7;
    font-weight: 300;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 5px;
    font-weight: 400;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
}

.option-card:hover .btn {
    background-color: #4A89DC;
}

.option-card.results .btn {
    background-color: var(--accent-color);
}

.option-card.results:hover .btn {
    background-color: #8CC152;
}

.option-card.request .btn {
    background-color: #4FC1E9;
}

.option-card.request:hover .btn {
    background-color: #3BAFDA;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: 50px;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 10px;
    font-weight: 300;
}

@media (max-width: 768px) {
    .options-row {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 2rem;
    }

    .option-card {
        padding: 20px;
    }
}